(19)

(11)

EP 1 966 846 A2

(12)

(88) Date of publication A3: 04.10.2007 (43) Date of publication: 10.09.2008 Bulletin 2008/37 (21) Application number: 06820945.1 (22) Date of filing: 22.11.2006

(51) International Patent Classification (IPC):  H01M 8/04(2006.01) (86) International application number: PCT/IB2006/003304 (87) International publication number: WO 2007/069010 (21.06.2007 Gazette 2007/25)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 16.12.2005 JP 2005363264 (71) Applicant: Toyota Jidosha Kabushiki Kaisha Toyota-shi, Aichi-ken 471-8571 (JP)

(72) Inventors: HASUKA, Yoshinobu, c/o Toyota Jidosha Kabushiki Kaisha Toyota-shi, Aichi-ken 471-8571 (JP) SHIBUI, Hiroyuki, c/o Toyota Jidosha Kabushiki Kaisha Toyota-shi, Aichi-ken 471-8571 (JP) ISHIKAWA, Norimasa, c/o Toyota Jidosha Kabushiki Kaisha Toyota-shi, Aichi-ken 471-8571 (JP) (74) Representative: Kuhnen & Wacker  Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Strasse 40A 85354 Freising 85354 Freising (DE)